It's still a bit early as Japanese people don't usually receive their tickets about a month or two before the concert. They'll only know their seats then.
So I guess it's best to wait til Sept/Oct and check various auction websites such as Yahoo Auctions and use a middleman to help you buy the tickets when it's time (if you know someone in Japan it would be easier, if not use middleman services such as celga, noppin, etc... there are a lot of those, you can just google that easily)
http://auctions.search.yahoo.co.jp/s...6%81%B5/22748/
http://ticket.st/artists/amuro-namie (this is a website on which people sell their tickets, they add seats info whenever they get it, some sell pairs, some don't, but it's not an auction website, so it's pretty cool if you can afford it)
I've only listed those two because I've actually got tickets from those in the past. You can also go through mbok or rakuten as well, but I believe you'll be luckier with YA and ticket st
I'm not sure if you'll be able to find front row tickets as those are quite rare, but you should manage to get pretty decent ones from these websites since it's not the final show.
Now you just have to wait.
